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E60 / E61 (2004 - 2010) BMW 5-Series E60 Sedan was first seen in the Unites States in the fall of 2003 with a 2004 Model Year designation. The E61 wagon followed shortly there after. The E60/E61 5 series is now available as a 528i, 528xi, 535i, 535xi, 550i and a 535xi sports wagon! -- View the E60 Wiki

How can I tell if my shocks are going bad cause when I drive I def feel it in my seat and my steering feels funny every time I hit a bump it moves from side to side like its wobbly , the steering is not good at all . My mechanic said their shot cause he did the struts arm bushings .the old test by shacking the car ain't working ,but like I said it keeps bouncing when I hit lil bumps not even big bumps and the steering is like hard to control it goes with the bump basically

I feel the same wait, interesting... But it's only my rear that it feels like it sways. If I hit a bump while I'm turning, it feels like my rear end hydro planed for a sec. Doesn't feel solid, if that makes any sense.

I purchased a set of Koni FSD/H&R springs based on my research, soft on bumps, firm in the twisties. I have not installed them yet but do a search for feedback.
Stay away from Bilstein Sports, great for track, not so great for real world bumpy roads in the NE.

Jager keep me posted on your impressions! Would like to hear how you like them.

I just flash tuned a buddy's 335ci to around 420hp/460 lbs torque and it quickly became clear his suspension was inadequate. Lots of lurching and bouncing, very unsettled ride with that power.
BMW's philosophy has always been to match the power to the quickness of the suspension, never to overwhelm it and lose control. I am a big believer in that.
Likewise I think the 550 is a great car, but it suffers from a slightly lazy suspension.

Jager keep me posted on your impressions! Would like to hear how you like them.

I just flash tuned a buddy's 335ci to around 420hp/460 lbs torque and it quickly became clear his suspension was inadequate. Lots of lurching and bouncing, very unsettled ride with that power.
BMW's philosophy has always been to match the power to the quickness of the suspension, never to overwhelm it and lose control. I am a big believer in that.
Likewise I think the 550 is a great car, but it suffers from a slightly lazy suspension.

Peder,
Will do, I will not install until the spring, too cold now to work in the garage. I notice some of that lurching in long sweeper on-ramps which is a good test. The 540 with Bilsteins just takes a set and very little correction needed though you feel every bump. The 550 with stock worn Sport suspension does not inspire confidence, i.e. feels floaty which I hope the FSDs will cure based on your experience.